Headwaters to Headwaters: A Mayacamas Hike Extravaganza @ Sugarloaf Ridge State Park - Observatory
Apr 29 @ 9:00 am – 5:00 pm

Join us for a very rare opportunity to hike from Hood Mountain Regional Park to Sugarloaf Ridge State Park via the historic McCormick Ranch section of Sugarloaf. This event will be a grand tour of the Mayacamas Mountains in the northern half of Sonoma Valley and will pass close to the headwaters of Santa Rosa Creek and Sonoma Creeks. The Perry family has generously given permission to hike through their property, allowing our adventure to go the back way along the Napa/Sonoma county line. The route will take participants through some of the wildest and most beautiful sections of Sonoma County filled with massive trees and lovely wildflowers. The terrain also has some amazing history especially of the McCormick and Hurd families. At the end of the 11-mile hike, join your fellow adventurers for a delicious barbecue meal at the Sugarloaf day use picnic area, beer and wine included.   LIMITED SPACE – Get tickets soon.  

Participants will park at Sugarloaf Ridge State Park at 9 AM, and Team Sugarloaf will shuttle them to the Los Alamos parking lot of Hood Mountain Regional Park. From there, hikers will follow the Hood Mountain Trail down to Homestead Meadow and then cross into the McCormick addition of Sugarloaf. We will work our way up Quercus Trail and Grandmother Oak Trail and overlook the former Spaulding property before taking a lunch break at Red Hill. Continuing up Maple Glen Trail, our group with permission from Jim Perry, will hike southeast along the county line and enter Sugarloaf before taking a break at the Red Barn with snacks and cold drinks provided by Team Sugarloaf. The group will then proceed up to Bald Mountain and finally work its way back down to the day use area at Sugarloaf for a barbecue dinner. The route covers approximately 11 miles with elevation gain of about 2800 ft. We expect to arrive at the barbecue about 4:30 PM.

Tickets are $40, and all profits will be split between Team Sugarloaf and the Sonoma County Regional Parks Foundation. Team Sugarloaf, The Sonoma Ecology Center, Sonoma County Regional Parks, and Bill and Dave Hikes are the hike sponsors and organizers.

Please bring a lunch, snacks, and water and be prepared to walk 11 miles over the steep and sometimes rough terrain. Also, dress appropriately for the weather.  Tickets here!

Planet Walk Hike @ Sugarloaf Ridge State Park
Apr 29 @ 10:00 am – 2:00 pm

Please join us for a guided hike along the Planet Walk with RFO docents. Along the way they will speak about each planet in our solar system, with chances to view local wildflowers along the way. This hike come with “passports” booklets for all participants, where you will receive a stamp for each planet you reach. There will be two different options for this hike: 1, travel along Meadow trail to Brushy Peaks until you reach Uranus, then head back on Hillside trail. This is a 2 mile loop with 250 ft elevation gain. Then option 2, Do the full Planet Walk Loop to Pluto of 6.3 miles with a 1100 ft elevation gain traveling along Brushy Peaks to Grey Pine and back through Meadow. Cost is $10 per person parking fees still apply. Please bring a lunch and water.

Purchase tickets here:

RFO Solar Viewing @ Robert Ferguson Observatory
Apr 29 @ 11:00 am – 3:00 pm

-Solar Observing:  Time: 11AM – 3PM.  Come and view our closest star and learn about sunspots, prominences, flares and more. We observe with both visible light and radio telescopes.  No Charge.
For more info please visit Robert Ferguson Observatory Website:

RFO Public Star Party @ Robert Ferguson Observatory
Apr 29 @ 8:00 pm – Apr 30 @ 12:00 am

-Presentations on astronomical topics are given in the classroom throughout the course of the evening. Starting at dusk, the Observatory’s three main telescopes are open for your viewing. Docents set up additional telescopes in front of the building. Friendly and knowledgeable docents are available to answer your questions.
For more info please visit Robert Ferguson Observatory Website: in the daytime

Guided Backpacking Trip @ TBD
May 6 @ 10:00 am – May 7 @ 5:00 pm

Join us for a fun introductory backpacking experience at a relaxed pace. The official start time is 10 am on Saturday, May 6. We’ll follow a moderately hilly trail 2 mile hike with pack (4-5 miles round trip). We’ll camp at a backcountry campsite on Saturday night and return to the parking lot on Sunday mid-day. You will receive more information about equipment, food and directions after you register. All participants must complete a screening form before registration is complete. This form will be sent to you after your initial registration. See more information at

Purchase tickets here:

Sugarloaf Wildflower Walks @ Sugarloaf Ridge State Park
May 6 @ 10:00 am – 12:30 pm
Join Team Sugarloaf docents for a spring wildflower walk.  The park includes hillside grasslands with lupines, paintbrush, and iris, wet areas with seep-spring monkeyflower, creeks with Western azalea, chaparral areas with ceanothus and chamise, hardwood forests with delicate chocolate lilies, and redwood forests with starflower. These wildflower walks are not to be missed! Sugarloaf Ridge State Park wildflower walks are $10 and an entry fee or park pass is required for vehicles. These walks are 1-3 miles long. Reservations are required by 5:00 pm the day prior to the walk. This is a beginning to intermediate level hike. All trails contain small elevation gains, and participants are required to wear appropriate footwear.

ParkRx – Hiking for Fitness Series
May 7 @ 9:00 am – 12:00 pm

Please Join us for an 8-week Hiking for Fitness Program. The program leaders will guide you on a series of weekly hikes with the challenge increasing each week. The group’s final hike will be to the top of Bald Mountain where hikers can enjoy the stunning 360 vistas. Hikes will start at 9 am at either Sugarloaf Ridge State Park or Annadell State Park. The Hiking series costs $80 plus parking or free for hikers with a ParkRx from their Sonoma County Medical Provider. For more information on Park Rx please visit

Hike Series: 

1) May 7: White Barn to Uranus Sugarloaf. 2.2 Miles, 80 ft elevation
2) May 14: Meadow Hillside Loop.  3 miles, 250 elevation
3) May 21: Stern/Stern Ranch/Pony/Canyon. 3 miles, 500 elevation
4) May 28: Vista Trail Loop.  4.5 miles. 700 ft elevation.
5) June 4: Neptune Picnic Table.  5 miles. 850 ft elevation.
6) June 11: Goodspeed to Bench.  4.2 miles, 1000 ft. elevation.
7) June 18:  Grey Pine/Red Mt.. 5.3 miles.  1200 ft elevation.
8) June 25:  Climb to Bald Mt.  6.2 Miles 1500 ft. elevation.

All hikes will Start at Sugarloaf Ridge State Park.  Meet at the white Barn Area. Purchase Tickets here:


Sugarloaf’s Volunteer Potluck Social @ Sugarloaf Ridge State Park
May 7 @ 5:30 pm – 7:30 pm

Calling all Sugarloaf and Jack London Volunteers, it is that time of year again for us to get social. Team Sugarloaf will be providing the main protein, so please bring your favorite side dishes, salads or desserts. We will see you at the Group Camp here at Sugarloaf.

Trail Clearing & Construction Day @ Sugarloaf Ridge State Park
May 11 @ 9:00 am – 1:00 pm

Help us keep our trails clear of brush and free of mud and rocks and assiste with construction and maintenance projects such as painting and building repair.  Meet at the White Barn at 9:00.   Tools provided, no experience needed.  And lunch included!
Volunteers like you make the difference at Sugarloaf.
To RSVP and if you have questions email

Sugar-Hood Shuttle: Los Alamos @ Sugarloaf Ridge State Park
May 13 @ 9:00 am – 12:00 pm
Want to do a through hike from Sugarloaf Park to Hood Mt. Los Alamos Parking Lot or vice versa?  Catch a ride on the Sugar Shuttle!
How it works
Every hour our Shuttle will leave from either Sugarloaf Park or Hood Mt. Regional Park Los Alamos Lot. Make a reservation and then ride to the other end of the trail, or hike and ride back.   Riding first and hiking back to your car is the easiest way – no worries about how long you take to finish your hike. First Pick up is at 8:00 am at Sugarloaf and runs through 1:00pm last pick up at Hood Mt. Los Alamos Lot, at the end of Los Alamos Road. (NOT the Pythian lot of Pythian Road).
We recommend a reservation, but you can ride on a space available basis as well.
This 7.5-mile one way hike with 2,000 feet of vertical climbing should take 4 to 5 hours. This is why we recommend dropping your car off at one end and riding the shuttle to the other so you’re not having to wait for the shuttle to return when you finish your strenuous hike.
No charge for ride, but suggested donations of $10 are accepted on the shuttle.
Dogs are not allowed on the shuttle or on the State Park part of the trail.
Shuttle operated by Team Sugarloaf / Sonoma Ecology Center.